The Hobbit - Chapter 05 - Riddles in the Dark

[Raynor]

What about Gollum's promise if Bilbo won?

Well, that seems to be the weak part in Tolkien's linking the Hobbit to Lotr:

Originally Posted by Letter #109

Rayner has, of course, spotted a weakness (inevitable): the linking. I am glad that he thinks that the linking has on the whole been well done. That is the best that could be hoped. I have done the best I could, since I had to have hobbits (whom I love), and must still have a glimpse of Bilbo for old times' sake. But I don't feel worried by the discovery that the ring was more serious than appeared; that is just the way of all easy ways out. Nor is it Bilbo's actions, I think, that need explanation. The weakness is Gollum, and his action in offering the ring as a present

I wonder if Bilbo was riddling with Smeagol or Gollum?

I doubt that Smeagol the hobbit would fancy eating another hobbit